Which of the following electric motors would be the safest and most reliable to use on the main deck of a vessel in foul weather conditions?（）<br>A:Sealed motors<br>B:Drip proof motors<br>C:Enclosed motors<br>D:Watertight motors

Which of the following electric motors would be the safest and most reliable to use on the main deck of a vessel in foul weather conditions?（）
A:Sealed motors
B:Drip proof motors
C:Enclosed motors
D:Watertight motors

出自：海船船员证

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